Feed stop mechanism.



No. 643,599. Patented Feb. I3, I900. H. E. HARBAUGH.

FEED STOP MECHANISM.

(Application filed June 17, 1899.) (No Model.) 2 Shaets$heet I.

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(No Model.)

Patented Feb. l3, I900. H. E. HARBAUGH.

FEED STOP MECHANISM.

(Application filed June 17, 1899.)

2 Sheets-Shun 2.

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FFICE.

PATENT HOWARD E. HARBAUGH, OF KENOSII-A, \VISGONSIN.

FEED STOP MECHANISM.

SPECIFICATION forming part of Iletters Patent No. 643,599, dated February 13, 190i).

Application filed June 17, 1899.

To all whom it may concern:

Be it known that I, HOWARD E. HARBAUGH, a citizen of the United States, residing at Kenosha, in the county of Kenosha and State of Wisconsin, have invented certain new and useful Improvements in Feed Stop-Motions, of which the following is a specification.

The object of this invention is the production of mechanism for stopping the feed in certain machines at a predetermined period in the operation thereoffor example, for stopping the feed of the wirestrands in machines for weaving wire to be used in the construction of woven-wire mattresses, wherein strands of acertain length are required. This object is accomplished, in the embodiment here shown of the invention, by connecting the shaft. driving oneof the feed-rolls with a rotatable releasing-carriage by means, of a worm and worm-wheel, afriction-clutch within the drive-pulley on said shaft being caused to engage said pulley by the operator, which engagement is automatically released when said carriage has been rotated a certain distance by its connection with the worm-wheel on said shaft. The tripping device on said carriage is adjustable to permit of a change in the length of wire fed between the feedrolls during each cycle in the operation of the machine.

In the accompanying drawings, Figure 1 is a side elevation of the feed mechanism of this invention, representing the parts to be in a position of rest. Fig. 2 is a front end elevation of the same. Fig. 3 is a side elevation of the mechanism, showing the friction-clutch in a position to engage its shaft and the other parts in operative positions. Fig. 4 is a vertical central section through the worm-wheel, showing the rotatable carriage out of engagement with said worm-wheel. Fig. 5 is a similar view showing the parts in a position in which the carriage and worm-wheel are locked together. Fig. 6 is a face View of the carriage, and Fig. 7 is a detail View showing the manner of setting the adjustable trippingstud.

Like letters of reference indicate corre sponding parts throughout the several views.

In the embodiment here shown of this invention I have provided the supporting-frame A, having journal-bearin gs for the drive-shaft Serial No. 720,938. (No model.)

shaft 0. On the rear end of the shaft 13, I

have mounted a friction-pulleyE, of any suitable construction, and have provided the clutch-cone E of said friction-pulley, having the usual connections with the shaft B and an operating-arm. A worm F, fixed on the shaft B near the center thereof, meshes with and imparts motion to the worm-wheel G. This wormwvheel has a tubular bearingsleeve G and a recess G in its face and is rotatably mounted in the supporting-frame A. The peripheral wall surrounding said recess is provided with serrations G A circular carriage H lies within the recess G of the worm-wheel G, and the stem H thereof integral with said carriage has a rotatable bearing in said tubular sleeve G, the collar H fixed on the rear end of the stem H, holding said stem from lateral displacement. The circular carriage H is provided with the channel H in its face, extending from its center to the periphery of said carriage, which channel is intended for the reception of the sliding pawl H serrated at its outer end to engage the peripheral teeth G in the recess G A pin H is set in the circular carriage II, extending upward in the outer end of said channel H and said sliding pawl H is provided with acentral elongated opening surrounding said pin. A coil-spring H lies in said elongated opening, and by its expansive force holds the pawl from engagement with the serrations G forming the peripheral wall of the recess G A plate H secured to the face of the rotatable carriage H, holds the spring 11 and the sliding pawl H in place in the channel H The carriage H and its stem H are provided with an aX- ial'opening H for the reception of the stud H the wedging-neck H of which stud is adapted to throw the sliding pawl H outward, against the action of its restraining coil-sprin g H, into engagement with the peripheral serrations l in the recess G of the worm-wheel G. The coil-spring H lying in the bottom of the axial opening H jn said carriage and stem, has a tendency to force the stud H forward out of engagement with the pawl II. A stop-pin H is fixed on the face of the carriage H, and a circular elongated opening H concentric with the centerof said carriage, extends transversely through said carriage and about three-fourths of the way around the carriage, which circular opening is intended for the reception of the adjustable setting-stud H provided for limiting the duration of feed movement. A strap H secured to and lying upon the periphery of the collar H, is provided with a weight H at its lower end,the purpose of this strap and weight being to rotate the carriage II to its normal position when the engagement between the carriage H and the worm-wheel G is broken.

A rock-shaft I is mounted in the rear portion of the supporting-frame A and carries the rock-arm I, having the usual connection with the friction-cone 1 of the friction-pulley E, also having aflixed to said rock-shaft the forwardly-extending lever J, which lever is capable of a slight pivotal movement. This leverJ is provided with the stud J, adapted to engage the stud H when the lever J is raised, pushing said stud inward in the opening H against the action of the coil-springs H and H, thereby causing the sliding pawl H to be pressed outward into engagement with the serrations G3 of the recess G in the worm-wheel G, thus locking the carriage rigidly with said worm-wheel. The lever J is connected by the rod J with the foot-lever J by means of which connection said lever may be raised by the foot of the operator, and when so raised the detent-lever, to be later described, holds said lever J elevated.

A shaft K, capable of an oscillatory movement, is mounted in the supporting-frame A, near the lower portion and at the forward end thereof, which said shaft bears the trigger K, loosely mounted thereon; also, the detent-arm K fixed on said shaft. A lug K on the trigger K forms a means of engagement between said trigger and said deten t-arm whereby the trigger may move the detent-arm to release the lever J, but also has a movement on the shaft K independent of that of said detentarm. A raising-arm K extends backward from the detent-arm K and is adapted to raise the lever J when the detent-arm is not in engagement with said lever, the handle K integral with said arms, being provided for their operation. A coil-spring K", attached at its lower end to an eccentric-stud K projecting from the hub of the detent-arm, is con nected at its opposite end with the free end of the lever J and tends by its elasticity to pull said lever downward.

In the operation of this feed stop-motion the strands of wire are placed in the grooves between the adjacent peripheral faces of the feed-rolls B and O, and the setting-stud H is adjusted in such position in the circular opening II that the proper length of wire may pass between said feed-rolls. The machine is started by raising the leverJ by means of the foot-lever J causing the stud J of the lever to engage and thrust inward the stud II. This movement of the stud H forces the sliding pawl H outward into engagement with the peripheral serrations G within the recess G of the worm-wheel G, thereby looking the rotatable carriage H with the wormwheel. The upward movement, just described, of the lever also oscillates the shaft I, upon which said lever is mounted, moving the rock-arm I and thrusting the clutch-cone E toward the friction-pulley E, causing said pulley to frictionally engage the drive-shaft B. Power being applied to said friction-pulley, the drive-shaft will be rotated, turning the feed-rolls B and C and passing the wire between them. This rotation of the shaft B revolves the worm-wheel G and the rotatable carriage II therewith. The lever J is held elevated by the detent'arm K and remains in its elevated position until the continued rotation of the worm-wheel G and carriage H causes the setting-stud H to engage the trigger K, raising said trigger until the lug K thereon engages the detent-arm, removing said arm from engagement with the lever J. This lever,being unsupported, is drawn downward by the elasticity of the coil-spring K, oscillating the shaft I, moving the rock-arm I, and drawing the clutch-cone E away from the friction-pulley E, releasing the frictional engagement between said pulley and the drive-shaft B and stopping the motion of the feed-rolls.

The length of wire fed between the feed rolls B and O at each operative cycle of the machineis determined by the position of the setting-stud H in the circular opening H As soon as the lever J is released from the detent and is caused to descend by the action of the coil-spring K the stud J is withdrawn from engagement with the stud II", permitting the last-mentioned stud to be thrown outward by the coil-spring H and permitting the withdrawal of the sliding pawl H from its engagement with the peripheral serrations G of the recess G in the worm-wheel G. The rotatable carriage is thus free to revolve independent of the worm-wheel G, and said carriage is turned backward to its normal position by the strap H secured to and lying upon the periphery of the collar H, actuated by the weight H secured to said strap. A stop-pin H, engaging the upper end of the trigger K, limits the rotation of the rotatable carriage in this direction.

As soon as it is desirable to feed another length of wire between the rolls B and O the machine is started by the operator, as before, and the movements just detailed of the parts of the mechanism are repeated. Should it be desirable to stop the feed before the automatic tripping device causes it to stop, it

may be done by depressing the handle K which withdraws the detent-arm K from its engagement with the lever J, permitting the latter to be drawn downward by the action of the spring K and stopping the motion, as before. The rotatable carriage II is by this movement permitted to return to its normal position; but the feed of the strands between the rolls at the time the machine was stopped may be completed by further depressing the handle K causing the raising-arm K to engage and lift the lever J to its upper position, also causing the clutch of the friction-pulley E to engage the drive-shaft B, which engagement is continued as long as said handle is held depressed.

I claim as my invention 1. In a feed stop-motion, in combination, a supporting-frame; a shaft j ournaled thereon; means for imparting rotary motion to said shaft; a lever for stopping the movement of said shaft; a wheel having a rotatable engagement with said shaft; and a rotatable releasing-carriage for causing said lever to be moved to stop the rotary motion of said shaft, which carriage is concentric with said wheel, and is capable of being locked in engagement therewith.

2. In a feed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; means for imparting a rotary motion to said shaft; a lever for stopping the movement of said shaft; a detent for said lever ;a wheel having a rotatable engagement with said shaft; a rotatable releasing-carriage for causing said lever to be moved to stop the rotary motion of said shaft, which carriage is concentric with said wheel, and is capable of an independent rotation; and means for locking said carriage in engagement with said wheel.

-3. In a feed stop-motion, in combination, a supporting-frame a shaft journaled thereon; means for imparting a rotary motion to said shaft; a lever for stopping the movement of said shaft; a detent for the lever; a wheel having a rotatable engagement with said shaft; a rotatable releasing-carriage for moving said detent to stop the rotary motion of said shaft, which releasing-carriage is concentric with said wheel, and is capable of an independent rotation; and means for locking said carriage in engagement with said wheel.

4. In afeed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said worm; a rotatable releasing-carriage concentric with said wheel, capable of an independent rotation; means for causing said releasing-carriage and said worm-wheel to rotate together; and means actuated by said releasing-carriage for stopping the rotation of said shaft.

5. In a feed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said worm; a rotatable releasing-carriage means for causing the Worm-wheel and the releasing-carriage to rotate together; a lever for stopping the rotary motion of said shaft; and means comprising said releasing-carriage to actuate said lever. g

6. In a feed stop-motion, incombination, a supporting-frame; a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said worm; and means for stopping the rotary motion of said shaft, which stopping means comprises a rotatable releasing-carriage.

7. In a feed stop-motion, in combination, a supporting-frame; a shaft jou rnaled thereon means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said Worm; a lever for stopping the rotary motion of said shaft; a detent for said lever; a trigger for engaging said detent; and a rotatable releasing-carriage for moving said trigger.

8. In a feed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said worm; a rotatable releasing-carriage concentric with and capable of rotating with said worm-wheel; astop-pin on said carriage; a lever for stopping the rotary motion of said shaft; a spring and a detent for said lever; a trigger for engaging said detent; and a stud on the releasing-carriage for engaging said trigger.

9. In a feed stop-motion, in combination, a supporting-frame a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a recessed wormwheel for said worm; a rotatable releasingcarriage adapted to lie within said recess; a lever for stopping the rotary motion of said shaft; means for moving said lever in one direction; a spring for moving said lever in the opposite direction; a detent for holding said lever against the action of said spring; a trigger for engaging said detent; anda stud on the releasing-carriage for engaging said trigger.

10. In afeed stop-motion, in combination, a supporting-frame a shaft j ournaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a recessed wormwheel for said worm, which worm-Wheel is provided with serrations; a rotatable releasing carriage for said recess; a'pawl on said carriage for engaging the serrations on said wormwheel; a lever for stopping the rotary motion of said shaft; a stud on said lever for causing the: pawl on the releasing-carriage to engage the serrations on the Worm-wheel; means for movingsaid leverin one direction; a spring for moving said lever in the opposite direction; 'a detent for holding said lever against the action of said spring; a trigger for engaging said detent; and a stud on the rotatable releasing-carriage for moving said trigger.

11. In a feed stop-motion, in combination, a supporting-frame a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a recessed wormwheel for said worm, which worm-wheel is provided with serrations in its recess; a rotatable releasing-carriage for said recess; a sliding pawl on said carriage for engaging the serrations of the worm-wheel; a Wedging-stud for moving said pawl; a lever for stopping the rotary motion of said shaft; a stud on said lever for engaging the wedging-stud on the releasing-carriage; a lever for moving said stopping-lever in one direction; a spring for moving said stopping-lever in the opposite direction; a detent forholding said stoppinglever against the action of said spring; a trigger for engaging said detent; and an adjustable stud on said rotatable releasing-carriage for moving said trigger.

12. In afeed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a recessed wormwheel for said worm, which worm-wheel is provided with a series of serrations within said recess; a rotatable releasing-carriage for said recess, which releasing-carriage has a rotatable movement independent of said wormwheel, and is provided with an elongated concentric opening for receiving a setting-stud; a sliding pawl on said releasing-carriage for engaging the serrations of said worm-wheel; a wedging-stud for moving said pawl; a lever for stopping the rotary motion of said shaft; a stud on said lever for engaging the wedging-stud of said rotatable carriage; a foot-lever for moving said stopping-lever in one direction; a spring for moving the stopping-lever in the opposite direction; a detent for holding the said lever against the action of said spring; a trigger for engaging said detent; and an adjustable stud in said concentrio opening of the releasing-carriage for engaging said trigger.

13. In a feed stop-motion, in combination, a supporting-frame; a shaftjournaled thereon; means for imparting rotary motion to said shaft; a worm on said shaft; a worm-wheel for said worm; which worm-wheel is provided with a recess in its face having serrations therein; a tubular bearing-sleeve for the worm-wheel; a rotatable releasing-carriage for said recess, which carriage has a bearingstem for extending within said sleeve, and is provided in its face with an elongated concentric opening for receiving an adjustable setting-stud; a collar fixed on said bearingstem; a strap on the periphery of said collar; a weight at the free end of said strap; a sliding pawl on said releasing-carriage, which pawl is adapted to engage the serrations in said worm-wheel; a wedging-stud for moving said pawl; a spring for said stud; a lever for stopping the rotary motion of said shaft; a stud on said lever for engaging the wedgingstud of said releasing-carriage; a foot-lever and a connecting-rod for moving said stop ping-lever in one direction; aspringformoving said stopping-lever in the opposite direction; a detent for holding said stopping-lever against the action of said spring; a raisingarm on said detent; a hand-lever for moving said detent and said raising-arm; a trigger for engaging said detent; and an adjustable setting-stud for moving said trigger.

14. In a feed stop-motion, in combination, a supporting-frame; a shaft journaled thereon; a pulley mounted on said shaft; a frictionclutch for engaging said pulley with said shaft; an arm for operating said frictionclutch; a worm on said shaft; a worm-wheel for said worm, which worm-wheel is provided with a circular recess in its face, andaseries of serrations in the peripheral walls of said recess; a tubular bearing sleeve for said worm-wheel; a rotatable releasing-carriage adapted to lie within said circular recess, which carriage is provided with an elongated concentric opening for receiving an adjustable setting-stud; a stem for said releasingcarriage adapted to lie within the bearingsleeve of said worm-wheel a collar fixed on said stem; a strap on the periphery of said collar; a weight attached to the free end of said strap; a sliding pawl on said releasingcarriage adapted to engage the serrations within the recess of said worm-wheel a wedging-stud for moving said pawl in one direction; a spring for moving said pawl in the opposite direction; a stopping-lever for moving the before-mentioned arm; a foot-lever and a connecting-rod for moving said lever in one direction; a spring for moving said lever in the opposite direction; a detent for holding said lever against the action of said spring; a raising-arm on said detent; a hand-lever for moving said detent and said raising-arm; a trigger; a lug on said trigger, for engaging said detent; and an adjustable setting-stud for the elongated concentric opening in the releasing-carriage for moving said trigger.

15. In a feed stop-motion, in combination, a supporting frame; a drive shaft journaled thereon; a pulley on said shaft; a frictionclutch for engaging said pulley with said shaft; a rock-shaft on said frame; an arm for actuating said friction-clutch, fixed on said rock-shaft; a driven shaft journaled on the supporting-frame; intermeshing gears fixed on said drive and said driven shafts, respectively; a feed-roll on each of said last- Inentioned shafts; a worm on said driveshaft; a worm-wheel for said worm, which worm-wheel has a circular recess in its face, and is provided with a series of serrations about the periphery of said recess; a tubular bearing-sleeve for rotatably supporting said worm-wheel in said frame; a rotatable releasing-carriage having an elongated concentric opening for receiving an adjustable settingstud; a bearing-stem for said releasing-carriage adapted to lie within the tubular bearing-sleeve of the worm-wheel, which carriage and bearing-stem are provided with an axial opening; a collar fixed on said stem; a strap on the periphery of said collar; a Weight attached to the free end of said strap; a stoppin on the face of said releasing-carriage; a sliding pawl adapted to engage the serrations in the recess of the worm-wheel; a wedgingstud in the axial opening of said carriage and stem, for moving said sliding pawl into engagement with said serrations; a spring for said stud; a spring for withdrawing said pawl from engagement with said serrations; a stopping-lever fixed on said rock-shaft; a stud on said lever for engaging the wedgingstud of said releasing-carriage; a foot-lever and connecting-rod for raising said stoppinglever; a spring for moving said stoppinglever in a downward direction; a detent for holding said stopping-lever against the action of said spring; a raising-arm on said detent; a hand-lever for moving said detent and said raising-arm; a trigger having a lug adapted to engage said detent; and a setting-stud in said elongated concentric opening of the releasing-carriage, for moving said trigger.

H O'WARD E. HARBAUGH.

Witnesses:

JAMES PENNEFEATHER, MICHAEL HARKIN. 

